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AuthorJames Harvard
LicensePublic Domain
Posted08 Jan 2009
Updated08 Jan 2009
More by this author...


Decoding tag implementing Base64URL, as per (the corresponding 'decode' tag for Encode_Base64URL). (Essentially the same as the Base64 encoding scheme but the '=' padding character is omitted and the '+' & '/' characters are exchanged for the URL-safe '-' & '_'.)

Sample Usage


Source Code

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define_tag( 'Base64URL', -namespace='decode_', -required='in' );
	local( 'out' = string(#in)->replace('-','+')&->replace('_','/')& );
	if( (#out->size % 4) );
		#out += ('=' * (4-(#out->size % 4))) ;
	return( decode_base64(#out) );

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